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4 <br /> 1551 Industrial Road <br /> (i) Sequoia San Carlos 23 -9600 <br /> (650)232-9600 <br /> � Analytical wwseqFAX 0ialabs 612 <br /> www sequo�alabs corn <br /> tler-RyanlGeostrategieS(I) Project Tosco(1) <br /> 47 Sierra Court, Suite J Project Number Tosco(Former BP) SS#11192, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 11/21101 13 29 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B <br /> - - -- Sequoia Analytical - San-Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-10(L111063-10)Water Sampled 11/09/01 12 30 Received 11/09/01 19 35 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/l 1 1110073 11/19/01 11/19/01 EPA 8021B <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a,a a-Tri luorotoluene 997% 70-130 <br /> MW-11 (L111063-11)Water Sampled 11/09/01 13 23 Received 11/09/01 19 35 _ <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/] 1 1110073 11/19/01 1111910) EPA 8021B <br /> lknzene ND 050 " <br /> I oluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 R <br /> Methyl tert-butyl ether 170 50 " <br /> gate a,o a-Trifluorotoluene 773% 70-130 " <br /> la Analytical -San Carlos The results in this report apph,to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entireo, <br /> Page 5 of 19 <br />